Chaeles e



(No Model.)

O. E. DEY.

ANNUNGIATOR. No. 323,921. Patented Aug. 11, 1885.

Z7 .INVENTOR UNITED STATES PATENT OFFICE.

CHARLES E. DEY, OF DENVER, COLORADO.

ANNUNCIATOR..

SPECIFICATION forming part of Letters Patent No. 323,921, dated August 11, 1885.

(No model.)

To all whom it may concern.-

Be it known that I, CHARLES E. DEY, of the city of Denver, in the county of Arapahoe and State of Colorado, and a citizen of the United States, have invented a new and useful Improvement in Electro-Magnetic Annunciators.

The object of my invention is to provide an annunciator for the use of hotels and other buildings by which the number of the room.or rooms from which the call is made maybe indicated upon the dial; and I hereby declare the following to be a true description thereof, which will enable others skilled in the art to which my invention appertains to make the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a front view of my annunciator. D represents the dial-plate; X, the annunciator-case. A, B, and 0 represent three (3) metal indicators on the dial-plate. Indicator A has the movable cover E to one side, leaving the stationary metal pointer H, which is attached to the dial-plate D, pointing to the figure 1,representing a room. The figurel is painted on the dial-plate.

Figs. 2 and 3 are the front and side views, respectively, of the electromagnetic arrangement I use in operating my movable cover E. bin both Figs. 2 and 3 represent the metal back. 5 and s are screws holding the back to the dial-plate. M and M are two (2) electro-magnets. They are screwed to two (2) upright ends cast solid with the back. U is an iron plate with holes for the screws to go through, which screws hold the magnets to the upright ends of the metal back. U serves as a keeper; A represents an armature made of Norway iron, which is held to the back b by the screw Z, which goes through a hole in the armature and screws in the back I), leaving the armature free to move up and down against the ends of the cores of the magnets M and M. O is an upright piece cast solid with the back. Through O a screw, Z, goes for raising and lowering the armature a. WVisametal piece held plate in Fig. 3, in order to show the two parts as being different. The pointer H is a metal piece soldered to a nut and then screwed to the dial-plate. Both nut and pointer have a hole in the center for the pin P to turn in.

Supposing the annunciator-magnets to be connected with batteries and pushes in rooms, the operation isas follows: WVhen the electric circuit is closed by a push from a room, the electro-magnets M and M draw the armature a up to the ends of the cores of the magnets. The metal piece W, which is held by the armature a, then drops, causing the cover E to move to one side, as shown in Fig. 1. The coverE and piece WV, being screwed on the two ends of the same pin P, the cover E moves on the dial-plate the same distance as the piece W falls. The distance NV falls is regulated by an arrangement I use for throwing the piece W back again. This arrangement it is not necessary to describe in order to get an understanding of my invention.

Now, having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination of astationary metal pointer attached to the dial-plate with numbers painted on the dial-plate just below the end of the pointer, and a movable metal cover covering the pointer and number, which can be turned to one side and operated by an electromagnetic arrangement behind the dial-plate, making an indicator, as shown, for the purpose set forth.

CHARLES E. DEY.

\Vitnesses:

- O. W. PALMERTON,

L. A. FINOKE. 

